LATEST ANY TIME ONLINE AT WTAE.COM. EIGHT DAYS DOWN, EIGHT MORE TO GO. WE'RE OFFICIALLY AT THE HALFWAY POINT OF THE LIBERTY TUNNEL PROJECT, AND AS WE'VE BEEN REPORTING, THE POSTED DETOUR TAKES YOU UP MOUNT WASHINGTON, BUT WHEN OUR CAMERAS ROLLED, CAR AFTER CAR WENT RIGHT THROUGH THIS RED LIGHT AT MERRIMAC STREET AND VIRGINIA AVENUE. THAT BEGS THE QUESTION, IS THE DETOUR CAUSING EVEN MORE DANGER? REPORTER BOB MAYO TOOK THAT VIDEO TO OFFICIALS AND, BOB, WHAT ARE THEY SAYING TONIGHT? Reporter: WELL, CLEARLY SOME IMPATIENT DRIVERS ARE CAUSING A PROBLEM AND AS A RESULT OF OUR CALLING ATTENTION TO THIS, YOU HAVE TWO PITTSBURGH POLICE MOTORCYCLES HERE WATCHING AT THIS INTERSECTION. TAKE A LOOK AT THE VIDEO. THIS IS VIDEO YOU SAW LAST NIGHT, CAR AFTER CAR DANGEROUSLY RUNNING THE RED LIGHT HERE AT THE CORNER OF MERRIMAC STREET AND VIRGINIA AVENUE ALONG THE DETOUR, WORRYING NEIGHBORS. WHEN WE SHOWED IT TO MAYOR BILL PEDUTO, HE SAID WHEN YOU HAVE PEOPLE NEGLECTING TO STOP FOR A LIGHT, CLEARLY IT'S CAUSING PUBLIC SAFETY ISSUES. EXTENDED COMMUTE TIMES, CLEARLY, MAKING SOME DRIVERS IMPATIENT. NOW, THE MAYOR SAYS WHILE HE RELISHES WHAT PENNDOT IS SAYING, PENNDOT CAN'T ENFORCE THE LAWS ITSELF, PENNDOT IS RESPONSIBLE TO REQUEST AND PAY FOR THE EXTRA POLICE PRESENCE DURING ITS CONSTRUCTION PROJECTS. WE'LL PROVIDE THE OFFICERS, THEY HAVE TO BE ABLE TO PAY THEM TO BE ABLE TO BE THERE, BUT STARTING TONIGHT YOU'LL SEE THE DIFFERENCE. Reporter: AND YOU SEE THOSE OFFICERS HERE AND WE'VE SEEN THEM IN THE PAST HOUR, AT LEAST A HALF DOZEN TIMES TAKE OFF DOWN THE DETOUR ROUTE WITH THEIR LIGHTS FLASHING, FLAGGING DOWN MOTORISTS WHO WENT THROUGH THE